Male Rank: 2 (After the failed Babyls bombing incident, he was a prisoner and then escaped, so he had no chance for promotion. His actual skill is clearly higher.)

A 'Return to Origins' demon who finds ecstasy in despair. He wears glasses, and his atmosphere changes completely when he takes them off. His bloodline ability is Barrier (creating transparent walls). Although he appears soft-spoken and smiles often at first glance, he is a demon who can truly be called 'evil.' His body is naturally weak, and he frequently coughs up blood. He is more of a sponsored talent than a direct subordinate of Baal.

He has figured out Guest's identity.

Male Rank: Unknown (At least 7 or higher, considering Rank 7 was the baseline for infiltrating Babyls as a teacher.) Bloodline Ability: Unknown

A 'Return to Origins' demon who finds ecstasy in combat. He is a spider demon who usually has two normal arms but can manifest a total of eight hands. He has a sly personality and a light way of speaking. Surprisingly, he has deep loyalty to his comrades and shows a rare, intense anger if betrayed. He is the 'Fifth Finger' of the Six Fingers, a group of Return to Origins demons led by Baal.

He has not figured out Guest's identity (due to the deep bond within the Six Fingers, he doesn't even think to suspect a comrade).

Male Rank: Unknown (Estimated 4–5, as it's unclear if he went through the Scala.) Bloodline Ability: Unknown

A character with a fanatical obsession with the number 2. He has a strong vibe of a smirking sycophant. Ocho is also a Return to Origins demon, acting like a clownish demon who often gets flustered in various situations while maintaining a grin. He performs various missions as a regular(?) subordinate of Baal.

He suspects Guest's identity but doesn't show it, remaining in a state of uncertainty.

Male One of the 13 Crowns, known as the 'Thunder Lord' and the Ruler of the Battlefield. (The 13 Crowns are the 13 highest administrative officials, including the Demon King.) Among the other 13 Crowns, he is not well-regarded due to his rude and arrogant personality. He secretly plots to return the Netherworld to a 'beast pen' for Return to Origins demons. To achieve this, he seeks to resurrect the vanished Demon King, Derkila, and absorb his power.

He knows Guest's identity but is intentionally withholding information to toy with the Demon Border Control.